CRYSTALLINE AND AMORPHOUS IMATINIB BASE, IMATINIB MESYLATE AND PROCESSES FOR PREPARATION THEREOF

摘要

The present invention provides crystalline forms of imatinib base, imatinib base free of desmethyl imatinib, and imatinib mesylate free of desmethyl imatinib mesylate, processes of their preparation and pharmaceutical compositions of imatinib mesylate.